different between sinistrous vs sinisterous

English

sinister +? -ous

sinistrous (comparative more sinistrous, superlative most sinistrous)

(archaic) On the left side; inclined to the left; sinistral.
(archaic) wrong; absurd; perverse
- 1725, Richard Bentley, Remarks upon a late Discourse of free-thinking
  But even put them into the hands of a knave or a fool , and yet , with the most sinistrous' and absurd choice , he shall not extinguish the light of any one chapter.

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